Action Against Hunger (AAH) intervenes in the prevention of malnutrition and leads programs for improving the access to clean water, building latrines, drainage, etc. It also holds awareness sessions on good hygiene practice and water management. In emergency situations (epidemics, natural catastrophes, etc.), they put an activity leader out in the field (distributing water with tankers, hygiene kits, putting into place emergency sanitation, risk prevention programs) whilst at the same time coordinating the humanitarian response.